Results 261 to 270 of about 70,115 (291)

Tuning the magnetic properties of GaAs:Mn/MnAs hybrids via the MnAs cluster shape

Journal of Physics: Condensed Matter, 2006
We report a systematic study of ferromagnetic resonance in granular GaAs:Mn/MnAs hybrids grown on GaAs(001) substrates by metal-organic vapour-phase epitaxy. The ferromagnetic resonance of the MnAs clusters can be resolved at all temperatures below T(c).
Krug von Nidda, Hans-Albrecht, Kurz, T., Loidl, Alois, Hartmann, Th., Klar, P. J., Heimbrodt, W., Lampalzer, M., Volz, K., Stolz, W.   +8 more
openaire   +3 more sources

Band structures of zinc-blende-type MnAs and (MnAs)1(GaAs)1 superlattice

Journal of Magnetism and Magnetic Materials, 1998
Electronic band-structures of the hypothetical zinc-blende phase of MnAs and the (MnAs)1(GaAs)1(0 0 1) superlattice are calculated by using the full-potential linearized augmented-plane-wave method in order to discuss the effect of Mn-substitution for Ga in GaAs on their electronic and magnetic properties.
Masafumi Shirai, Takaki Ogawa, Isao Kitagawa, Naoshi Suzuki   +3 more
openaire   +1 more source

Nonuniform Reactive Ion Etching of MnAs/GaAs Heterostructures: MnAs Nanodots and GaAs Nanocolumns

Japanese Journal of Applied Physics, 2004
Under certain conditions, the reactive ion etching of MnAs layers grown on GaAs substrates proceeds in a remarkably nonuniform manner. Mounds are formed on the surface of the MnAs layers during the etching. They eventually result in submicron-scale islands when the etch front reaches the MnAs/GaAs interface.
Yukihiko Takagaki, Edith Wiebicke, Lutz Däweritz, Klaus H. Ploog   +3 more
openaire   +1 more source

?????????????????? ?????????????? ?????????????????? ?????????????????? MnAs ?????? ???????????????????????????? ?????????????????? ???????????????????????????????????? ?????????????????? ???????????????? ??????????????????????? ??????????

2014
The first-principles method FP-LMTO was used to investigate the ground state of MnAs with the hexagonal (B81) and distorted rhombic (B31) crystal structure. It is shown that in the compound, during the change of lattice volume, there occurs a continuous transition from the high- to the low-spin state.
openaire   +3 more sources

Magnetic phase diagram of MnAs

Journal of Magnetism and Magnetic Materials, 1985
Abstract A Landau-type phenomenological model, involving the coupling of the first-order magnetoelastic phase transition to the second-order structural phase transition in the presence of an external magnetic field, was applied to calculate the MnAs magnetic phase diagram.
L. Pytlik, A. Ziȩba
openaire   +1 more source

GaAs-MnAs nanowires

2011
Different strategies for obtaining nanowires (NWs) with ferromagnetic properties using the molecular beam epitaxy (MBE) grown nanostructures combining GaAs and Mn were investigated. Four types of structures have been studied: (i) self-catalyzed GaAs: Mn NWs grown at low temperatures on GaAs(100) substrates; (ii) GaAs: Mn NWs grown at high temperatures ...
Kovacs, A, Sadowski, J, Siusys, A, Kasama, T, Dunin-Borkowski, RE, Wojciechowski, T, Reszka, A, Kowalski, B   +7 more
openaire   +1 more source

?????????????????????? ?????????? ???????????????? ???????????????????? ???????????????? ?? ?????????????????????????? ?????????????????????????????? ?????????????????? ???????????????????? MnAs ?? MnP

2017
???????????????? ?? ???????????? ??????????????????, ?????????????? FP???LMTO ???????????????????? ???????????????? ???????? ???????????????? ???? ?????????????? ????????????????, ???? ?????????? ?????????????????????????? ??8??? ???? ???????????????????? ???????????????? ??31 ?????????????????????? ??????????????????. ????????????????, ???? ?? ?????? ?
openaire   +1 more source

mna, n.

2023
openaire   +1 more source

MNA and Nutritional Intervention

1999
F, Arnaud-Battandier, S, Lauque, M, Paintin, R, Mansourian, B, Vellas, Y, Guigoz   +5 more
openaire   +2 more sources

Ferromagnet (MnAs)/semiconductor (GaAs, AlAs, InAs)/ferromagnet (MnAs) trilayer heterostructures:

Journal of Crystal Growth, 2001
M Tanaka, K Takahashi
openaire   +1 more source